820976042 has 16 divisors (see below), whose sum is σ = 1256135040. Its totient is φ = 402282192.

The previous prime is 820976041. The next prime is 820976089. The reversal of 820976042 is 240679028.

It is a junction number, because it is equal to n+sod(n) for n = 820975987 and 820976005.

It is not an unprimeable number, because it can be changed into a prime (820976041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100259 + ... + 108137.

It is an arithmetic number, because the mean of its divisors is an integer number (78508440).

Almost surely, 2^820976042 is an apocalyptic number.

820976042 is a deficient number, since it is larger than the sum of its proper divisors (435158998).

820976042 is a wasteful number, since it uses less digits than its factorization.

820976042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8917.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 820976042 is about 28652.6794907562. The cubic root of 820976042 is about 936.3613832404.

The spelling of 820976042 in words is "eight hundred twenty million, nine hundred seventy-six thousand, forty-two".